<!doctype html>
<html>
<head>
    <meta charset="utf-8"/>
</head>
<body>
<div id="t">
    <div class="inner">
        <form>
            <div>
                <ul>
                    <li>

                    </li>
                    <li class="my">

                    </li>
                </ul>
            </div>
        </form>
    </div>
</div>


<ul>
    <li class="my">

    </li>
</ul>
<script src="/kissy/build/seed.js"></script>
<script src="/kissy/src/package.js"></script>
<script src="/kissy/tools/third-party/sizzle.js"></script>
<script>
    KISSY.use('dom/selector', function (S, engine) {
        var start= S.now();
        var els = engine.select('#t > .inner form ul > li.my');
        S.log(S.now()-start);
        S.log(els);
        start= S.now();
         els = Sizzle('#t > .inner form ul > li.my');
        S.log(S.now()-start);
        S.log(els);
    });
</script>
</body>
</html>